Windsor · SL4
Gas safety certificate in SL4 (Boveney)? We'll point you the right way.
Covering Boveney, Clewer, Cranbourne, Dorney, Eton, Eton Wick, Fifield, Oakley Green, Old Windsor, Spital, Windsor, Berkshire, Winkfield, Woodside, including Ascot & Sunninghill, Bray, Burnham. Find Gas Safe registered engineers nearby.
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Request a gas safety certificate in SL4 (Boveney)
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Request a gas safety certificate in SL4 (Boveney)
How to check a gas safety engineer is registered: see the Windsor page.
SL4 (Boveney) in a nutshell
SL4 covers Boveney, Clewer, Cranbourne, Dorney, Eton, Eton Wick, Fifield, Oakley Green, Old Windsor, Spital, Windsor, Berkshire, Winkfield, Woodside, in Bracknell Forest and Buckinghamshire and Runnymede and Slough and Windsor and Maidenhead. Give your full postcode when you ask for quotes, so the pro can confirm they cover your street.
Local tips for SL4
Two councils in one district
SL4 is split between Bracknell Forest and Buckinghamshire and Runnymede and Slough and Windsor and Maidenhead. Some councils run their own landlord licensing, so check which one your home is in.
Where's this from?
postcodes.io (ONSPD) local authorityGive your full postcode
SL4 stretches across Ascot & Sunninghill, Bray, Burnham and more, so give your full postcode, not just 'SL4', when you ask for quotes.
Where's this from?
postcodes.io (ONSPD) wardsMostly mains gas round here
Most homes in Windsor run on mains gas, so a standard boiler-and-hob check is what most people need.
Where's this from?
ONS Census 2021, Windsor: 76.9% mains gas onlyEngland landlord rules: quick version
- Every year: a check by a Gas Safe registered engineer.
- Within 28 days: give your tenants a copy (new tenants get it before they move in).
- Keep it: hang on to records for at least 2 years.
More detail on the Windsor page. Always double-check on GOV.UK.
Next door to SL4
Frequently asked questions
Which areas does SL4 cover?
SL4 (Boveney, Clewer, Cranbourne, Dorney, Eton, Eton Wick, Fifield, Oakley Green, Old Windsor, Spital, Windsor, Berkshire, Winkfield, Woodside) includes the wards of Ascot & Sunninghill, Bray, Burnham, Cippenham Village, Clewer & Dedworth East, Clewer & Dedworth West, Clewer East, Englefield Green West, Eton & Castle, Old Windsor, Winkfield & Warfield East (ONS Postcode Directory via postcodes.io).
Which postcode districts are next to SL4?
Neighbouring districts include SL1 (Burnham), SL2 (Farnham Common), SL3 (Colnbrook), SL5 (Ascot) (ONS Postcode Directory via Doogal). A pro covering SL4 may well cover these too, so it's worth asking.
How many homes are in SL4?
About 18,061 households and 43,302 residents at the 2011 Census, across 1,376 active postcodes (Doogal / ONS Postcode Directory).
Which council area is SL4 in?
SL4 sits in Bracknell Forest, Buckinghamshire, Runnymede, Slough, Windsor and Maidenhead (postcodes.io). Parliamentary constituency: Beaconsfield, Maidenhead, Slough, Windsor.
📊 The numbers behind this page
- Postcode district
- SL4 1
- Areas covered
- Boveney, Clewer, Cranbourne, Dorney, Eton, Eton Wick, Fifield, Oakley Green, Old Windsor, Spital, Windsor, Berkshire, Winkfield, Woodside 2
- Active postcodes
- 1,376 3
- Households (2011 Census, via Doogal)
- 18,061 2
- Population (2011 Census, via Doogal)
- 43,302 2
- Electoral wards
- Ascot & Sunninghill, Bray, Burnham, Cippenham Village, Clewer & Dedworth East, Clewer & Dedworth West, Clewer East, Englefield Green West … 4
- Parliamentary constituencies
- Beaconsfield, Maidenhead, Slough, Windsor 4
- Local authority
- Bracknell Forest, Buckinghamshire, Runnymede, Slough, Windsor and Maidenhead 4
- Households heated by mains gas only (Windsor built-up area)
- 76.9% 5
- ONS Postcode Directory
- Doogal
- Doogal / ONSPD
- postcodes.io
- ONS Census 2021
Made with open data. See where it all comes from. Updated 26 October 2026.